Wire-stitching machine.



-No.-706,690. Patented Aug. I2 I902.

F. P. ROSBACK.

WIRE STITCHING MACHINE.

Application filed June 5, 1901.

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WIRE STITCHING MACHINE. A li icion am June 5, 1901.

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WIRE STITCHING MACHINE.

(Application filed Jim 6, 1901.)

(I0 Model.) 7 -1 sheets-shut a.

F. P. ROSBACK.

WIRE STITCHING MACHINE.

(Application filed June 5, 1901.)

Patented Aug, I2, I902.

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(Application filed .fune 5, i901.)

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PNOYO-LII'HO. WASHINGTON, n. c

UNITED STATES PATENT OFFICE.

FREDERICK PETER ROSBACK, or CHICAGO, ILLINOIS.

WIRE-STITCHING MACH|NE.

SPECIFICATION forming part of Letters Patent N 0. 706,690, dated August12, 1902.

Application filed June 5, 1901.

T aZZ'whom it may concern:

Be itknown thatI, FREDERICK PETER Ros- BACK, a citizen of the UnitedStates, and a resident of Chicago,in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inWire-Stitching Machines, of which the following is a specification,referencebein g had to the accompanying drawings, forming a part hereof.

My invention relates to improvements in wire-stitching machines in whichwire staples are formed by being cut from a continuous spool of Wire,the cutting mechanism severing a piece from between the two ends,leavingthe ends on each side of the two-edged knife square and straight, thecut-out piece escaping downwardlybetween the knife-edges.

This wire is advanced or fed intermittently from the spool by a feedingdevice that is adjustable to secure any predetermined length of wire tobe cut oif and formed into a staple and forced or driven through thematerial and fastened by clenching.

Many of the features and operations of this machine shown in the presentdrawings are also shown in my former patents, No. 493,298, March 14:,1893, and No. 640,417, January 2', 1900, and it will be unnecessary tomake f ur-' ther particular reference to same, but only to that to whichmy present invention relates, which consists in improvements in thechaindrive-gear mechanism for actuating the parts and in the manner ofregulating the tension on the wire between the'spool and the feed rollsand in adjusting and regulating the rotary movement of the feed rolls tosecure any desired length of wire for forming into staples and also inthe novel construction of the adjustable box or trunnion of the lowerfeed-roll; also, in the manner of cutting the wire from which the stapleis formed to secure square ends to the staples that it may be forced ina direct straight line through the material. Theinvention furtherrelates'to the manner of holding the staple-piece by means of anupward-inclined slot of the horizontally-reciprm eating spring-actuatedanvil, thatis forced outward to bring the piece of wire in positionunder the staple driving bar within the notches of the bending-bar, uponeach side thereof, and has vertical grooves on each side andsimultaneously moves downwardly along 'of the adjustable wire-feedingdevice.

Serial No. 6 3, 3 3 5. (No model.)

the opposite sides of the plunger or anvil, which is gradually withdrawnas the curved swinging it staple supporter keeps the wire Within thevertical groove on each side, thereby form'ing the staple, which is thenforced downwardly through the material, as shown in my former patent. VInrthe drawings, Figure 1 is a side elevation of my'machine. Fig. 2 is afront view. Fig. dis a broken front elevation with the dialplateremoved, showing the wire between the feed-rolls. Fig. 4 is a sidesectional view of the staple-drivin g bar and its swingingstaplesupporter', which is the same as in my former patent. Fig. 5 is afront view of same. Fig. 6 is a sectional front view of the cutting andholding devices. Fig. 7 is asectional edge view of the cutting device online 77 of Fig. 6. Fig. 8 is a sectional side view of the anvil on line8 8 of Fig. 6. Fig. 9 is a sectional view Figs. 10 and 11 are sectionalviews of the adjustable wire-feed-regulating device, showing thepawl-bearing wheel keyed to its shaft and the ratchet-bearing Wheelsecured to the sleeveshaft. Fig. 12 is a sectional View of theadjustable feed-roll that provides enlarged or contracted space betweenthe rolls for different sizes of wire that is to be fed into themachine. Fig. 13 is a sectional view of the incased driving-sprocketwheels and chain and reciprocating cams that actuate the staple formingandcutting plates. Fig. 14 is a sectional view of the same on line 14 14of Fig. 13. Fig. 15 is a front elevation of the knife, the anvil, andthe vertically-reciprocating staple forming or bendingbar. Figs. 16, 17,and 18 are side elevations of same in various positions of operation, tobe hereinafter referred to. Fig.19 is a sectional view of the angularlyupwardly formed slot of the horizontally-reciprocating spring plunger oranvil as it has been advanced by its actuatingspring to place the wirewithin the horizontal holding-notches under the vertically-reciprocatingstaple forming or bending bar, that presses it down over the anvil.

In the drawings similar letters refer to similar'parts throughout theseveral views.

A is the main frame of the machine.

of the main frame.

tact with its actuating-wheel. 2o

B is the power-wheel; B, its shaft; 13*, the

sprocket-chain drive-wheel securedjthereto;

carries the pawl-bearing wheel 13, in which,

is journaled the pawl B", that contacts with the ratchet-wheel Bi, thatis secured to the sleeve-shaft B which shaft has secured on its outerend the large feed-roll B To this shaft is also secured the geardrive-wheel 5 that engages with a pinion b secured to the shaft b that,actuates the small verticallyadjustable feed-roll B, which supports thewire beneath the large fixed feed-roll B. This vertically-adjustablefeed-roll is supported in a bearing 1) within the guide-plate A and hasa slight oscillatory movement of its shaft and still maintains thepinion in con- This bearing is provided with a tapered projecting flangeI), (see Fig. 12,) that is controlled in its oscillation by means of thetaper-pointed adj usting-screw b to secure the proper tension of thefeed-rolls upon one edge of the wire 11 as it passes between the twofeed-rolls.

It is well known that book-stitching wire is usually flat or oval inform, and in the matter of applying the tension in its use the pressureon the edge of the wire secures better results than upon the top of thewire, as the very slight variation of the wire surfaces which is liableto occur will cause the feed- I rolls to hold it too tight and not feedit forward with the certainty that it will when the feed is applied moreon one edge, which always secures forward movement of the wire, and itis not liable to break in use.

The various desired lengths of wire required for staples to be used inmaterial of different thicknesses is readily secured by the adj ustmentof the feed-regulating dial-plate B, that is at the front of themachine, and as it is rotated or adjusted the shaft 13, to which it issecured, will also revolve the plate B, secured to the end of the shaftand provided with a cam on its periphery and adjustable to variouspositions for contact with the heel projection O on the pawl 13, whichpawl when traveling on the higher portion of the cam has its contactingfeed-actuating point 0 held out of contact with the feed-actuatingratchetwheel 13 secured to thesleeve-shaft B that actuates the largefeed-roll B while it is permitted to enter into contact with theratchetwheel when traveling on the lower portion of the cam. The pawl Balso has a projecting lug O farther along on its heel end,that passesthrough the flange-wheel l3 and at intervals bears on a stationarycam-plate B that is attached to the main frame to cause the raising ofthe point of the pawl and its release from contact with the ratchet asthe lug 0 travels upon the higher surface on the periphery of thecam-plate B and I thus provide an adjustable intermittent feed of thewire 2', that is held between the feed-rolls B and B. As thestapling-wire is advanced by tact with the vertically-reciprocatingdrivingplunger 01, as shown in Figs. 6, 7, and 15. This knife or die eis provided with a groove having a cutting edge on each side, and thepunching-die E presses down upon the wire, and thus cuts out a sectionof wire between the portion which is to form the staple and thespool-strand, leaving the two ends square, the cut-out section fallinginto the groove between the knives, from which it escapes outwardly. Ithus simultaneously cut the staplewire on each side of thesupporting-groove formed by the two knives to leave the ends square,that they may be forced through the material in a direct line, andhaving square ends it prevents divergence of the staple while beingforced downward in a straight line through the material. The cut pieceof wire from which the fastening-staple is formed is now held within theupwardly-inclined groove f of the reciprocating anvil, which is inposition shown in Figs. 17 and 18, the ends of the wire extending equaldistance downwardly on each side therefrom. When the driver G andvertically-grooved former G rise, the anvil F, with itsupwardly-inclined slot in which the piece ofwire is held, will be forcedforward by its springf and enter the vertical groove of the former G, asshown in Figs. l5, l6, and 19, forcing the wire in the holding notch orgroove 9 that serves as-a stop to arrest it at the base and right-handcorners of the former G, (see Fig. 19,) and the former G now descends,and the ends of the wire projecting from the anvil being thus held inproper position will be caused to enter the vertical grooves and theanvil forced back therefrom as the staple is supported on the swingingguide-arm G, that holds it in the vertical grooves on each side thereofin the formation and driving of the staple, same as shown in my formerpatent. This swinging guide-arm is supported on shaft 9, to which it iskeyed. This shaft is provided with a coiled spring 9 that is secured tothe shaft at its outer extended end in any well-known manner, while itsinner end has a bent finger 9 that contacts with the face of thevertically-grooved former G at its outer edge and holds the swinging armG in place as it is moved in and out during its vertical reciprocationsin the formation and driving of the staple.

The wire is supplied from the spool I, which has the ordinaryspring-tension pressure-plate 11 at each end, and I have provided anintermediate elastic friction take-up and tensionspring I, over whichthe wire passes as it leaves the spool, it having frictional contactwith its guiding-eyes t and the periphery of the spring, which impartsmore or less friction to the wire, and it also provides an intermediateelastic take-up to prevent slack in the wire and keep it taut and admitsits being fed intermittently by taking up the slack wire, which willgive sufficient wire to form a staple without causing the spool torevolve at this moment, and the slack wire held by the take-up isyielded to afford sufficient length of wire for this purpose, the spoolbeing at all times free to revolve and supply the tension-take-upspring.

Having thus described myinvention, what I claim, and desire to secure byLetters Patcut, is

1. In a Wire-stitching machine, the wirefeeding device, consisting ofthe main drivewheel B, its shaft B, the sprocket-Wheel 13 securedthereto, its drive-chain B communicating a rotary motion to thesprocket-pinion B that revolves the sleeve-shaft l3 actuating thepawl-bearing wheel B secured thereto, and provided with pawl 13 thatcontacts with ratchet-wheel B for imparting motion to the sleeve-shaft Band the feed-roll B secured thereto, combined with the geareddrive-wheel b that causes the pinion to ac tuate the feed-roll 13substantially as shown and described.

2. In a wire-stitching machine, the Wirefeeding device consisting of themain drivewheel B, its shaft B, the sprocket-wheel B secured thereto,its drive-chain 13 communieating a rotary motion to the sprocket-pinionB for rotating the sleeve-shaft B and the pawl-bearing wheel 13 securedthereto, that is provided with pawl B that contacts with ratchet-wheel Bfor actuating the sleeveshaft 13 having the feed-roll 13 securedthereto, and the geared drive-wheel b that imparts motion to thepinionZ2 and its shaft 6 and the feed-roll 13, combined with thedial-adjusting plate B secured to the shaft 13 and the adjustableratchet cam-plate I3 keyed thereto, having the raised cam on itsperiphery to contact with the projecting heel 0 of the pawl and controlits connection in various adjustments with the ratchet-wheel B and thecam-plate B attached to the frame A for raising the pawlout of actionsubstantially as shown and described.

3. Ina Wire-stitching machine the wirefeeding device in combination withthe oscillating adjustable journal-bearing Z) of the lower feed-rollerB, the tapered projecting flange b and its screw 19 whereby the journalbearing is oscillated to incline its upper surface and press thewire upon one edge and secure proper tension upon the wire substantiallyas shown and described.

4:. In a wire-stitching machine, the stapleforming and staple-drivingmechanism combined with the grooved knife 6 and the foreing-die E thatcuts a section of wire from between the portion which is to form thestaple and the remaining portion of the strand, thereby providing squareends substantially as and for the purposes set forth.

5. 'In a wire-stitching machine the combination of the anvil F havingthe upwardlyinclined slot f and the verticallygrooved former G, havingthe holding notch or groove 9 at its base to receive from the anvil thewire from which the staple is to be formed and hold it in properposition for entering the vertical grooves of the former G substantiallyas shown and described.

FREDERICK PETER RQSBAOK.

\Vitnesses:

E. RAYFIELD, F. P. RosBAoK, Jr.

